Connecter



April 10, 1934. H. J. L. FRANK Filed Aug. 19, 1933' INVENTOR.

A TTORNEY.

" 1 to restrain relative sidewise' movement-of the Strands ween the tconnecter parts and the strand, ends. It will be Single row 01 bared?atentecl Apr. 10, v 1934 UNITED STATES PATENT oFFicn 1,954,587cosmic-ma Harrison J. L. Frank, Detroit, Mich, asslg'nor to BulldogElectric Yroducts Company, Detroit, Micln, a corporation of WestVirginia Application August is, 1933, Serial nexesssis 6 Claims. (01.173-263) This invention relates to connecter means, paring fanned out ina single row, with no strands ticularly for multistrand cables. crossingone another, a pair of contact parts of The principal object is toprovide a connecter electrically conducting material between which ismeans which is so formed that it will interlock disposed the single rowof strands, a bolt passing cable strands thereto and simultaneously willinthrough the parts and adjustable to force them 00 sure direct andintimate electrical connection towards each other, the parts engagingthe strands between each and every strand of the cable and individuallyand with a uniformly distributed one or the other of the clamping'surfaces of clamping and contacting pressure, with the the connectermeans, all without the use of solder strands between the partsstraddling the bolt, or other solidified fluid bonding means. the singlerow of bared strands projecting from In one embodiment of the invention,the strands the space between the parts in a plane substanar fanned outin a single row and are distorted tially transverse to the direction ofrelative movefor interlocking purposes and clamped between ment of theparts, the parts having mating conthe contact blocks of a contact blocktype concavo-convex surfaces for distorting every one necter. It isproposed to so construct the connecter means that the bared endsof theconduction of relative movement of the parts, the strands tors willautomatically be distorted after they projecting from the space betweenthe parts in have been inserted straight. a direction transverse to theaxes of curvature of An embodiment of the invention of this aptheconcave-convex surfaces. plication h been disclosed in t appended 2. Inan electrical cable connection, the comdrawing. In this'drawing,bination of a circular electrical cable having a Fig. 1 is a top planview of a contact block type ity of du strands of bstantial connecterwherein the strand ends are fanned out l d cross Section greater thanthe riin a single row; gidlty and cross section of filaments or hairs,the

Fig.2 i n en i t strands being arranged in'a circle in a cable Figs. 1and 2 show a contact block connecter inand in a p i y of rows a d h mered with eluding copper contact blocks or parts'l and 2, n atio a P tionof the cable be l h 0f traversed by a clamping screw bolt 3 providedinsulation. the fihhductol' Strands at that P0111011 with a. nut 4. Theclamping surfaces 5 and 6 being fumed Outih 8| 8 6 with 110 a d of theblocks are grooved and ribbed, concave crossing 6118, n r, a pair ofrigi tact 35 and convex, respectively, to distort the fanned- JIOCKS pble .ofdeflection. and formed of out ends 7 of the strands a of thecable 9, these electrically co ducti mate ia the sin le row ends beingfanned'out in a single row before they of strands in dispo d between t eb o a are disposed'daetween the surfaces 5 and 6 and disbolt D t ou h hbl and adjustable torted by the movement of the blocks towards forcevthem towhldfl each other without each other, so that they areinterlocked to the 8 the blocks. the blocks 8 8 8 the surfaces. strandsindividually ,andwlth a uniformly dis Wings 10 are provided at the endsof the block t u d contactin essu e thereo w the locks strad the bolt, a

1 ds projec from the seen that the connecter means shown insures cops eb tw n t jbloc i a plane substantialper-to-copperclamped contact betweenevery ly transverse to the direction of relative moveone of the strandends and the clamping surfaces, n 0! h l k th bl vin a 3111818 allwithout the use of solder. 1 pair of mating concavo-convex surfaces forpro- Now having described a preferred embodiment vlding a singlekink ordistortion in every one of of the invention, reference will be had tothe the single row of bared strands,-the distortion following claimswhich determine the scope of the "being in the direction of relativemovements of invention. the blocks, the strands projecting from thespace What I claim is: between the blocks in a direction transverseto 1.In an electrical cable connection, the comthe 1880! curvature of h navo-conv x 8111- bination of a circular electrical cable having a faces.plurality of conductor strands arranged in a cir- 3. In an electricalcable connection. the

' cle and in a plurality of rows and covered with binationof a circularelectrical cable havin'gapluinsulation, a portion of the cable beingbare of rant? f c du t r Strands O sl'lbstmtll-l flfl insulation,conductor strands at that portion be; and cross section Ereflter thanthe r l y 11o of the single row of bared strands in the direc- 70 'ofinsulation, the conductor strands at that portion being fanned out in asingle row, with no strands crossing one another, a,-pair of rigidcontact blocks incapable of deflection, and formed of electricallyconducting material, the single row of strands being disposed betweenthe blocks,- a bolt passing through the blocks and adjustable to forcethem towards each otherwithout deflecting the blocks, the blocksengaging the strands individually and with a'uniformly distributedcontacting pressure-thereon, with the strands between the blocksstraddling the bolt, a single row of bared strands projecting from thespace between the blocks in a plane substantially transverse to thedirection of relative movement of the blocks, the blocks having a singlepair of mating concavo-convex surfaces for providing a single kink ordistortion in every one of the single row of bared strands, thedistortion being in the direction. of relative movements of the blocks,the strands projecting from the space between the blocks in a directiontransverse to the axes of curvature of the concavo-convex surfaces andmeans for preventing'movement of the strands from the space between theblocks in a direction perpendicular to the axis of the cable.

4. man electrical cable connection, the combination of a pair ofclamping parts, at least one of which is of electrically conductingmaterial, and a circular electrical cable having a plurality ofconductor strands arranged in a circle and in a plurality of rows andcovered withinsulation', a portion of the cable being bare ofinsulation, conductor strands at that portion being fanned out in asingle row and disposed between the clamping parts with no strandsbetween the parts crossing one another, a bolt passing through the partsand adjustable to force them towards each other, the parts engaging thestrands individually and with a uniformly distributed clamping andcontacting pressure, with the strands between the parts straddling thebolt, the single row of bared strands projecting from the space betweenthe parts in a plane substantially transverse to the direction ofrelative movement of the parts, the parts having mating concavo-convexsurfaces for distorting everyone of the single row of strands in thedirection of relative movement of the parts, the strands projecting fromthe space between the parts in a direction transverse to the axes ofcurvaturebf the concavo-convex surfaces.

5. A construction of the character specified in claim '4 provided withmeans for preventing movement of the strands from the space between i.

movement of the strands from the space between i the clamping parts in adirection perpendicular to the axis of the cable.

HARRISON J. L. FRANK.

